I cannot figure out what causes this but at times every 3rd load Firefox 
will load the page as a file download of type application/octet-stream and 
internet explorer usually just downloads the page as a notepad document. 
The IE issue is more repeatable but sometimes it just loads the page with 
incorrect formatting. At other times this works for days on end, or so it 
seems.

I thought this was due to apache httpd losing connection to to the tomcat 
server and defaulting to some strange behavior because we are getting 
errors in the apache file (below) when the tomcat server reboots every 
morning but now I am not so sure. A httpd service restart has fixed the 
problem in the past (or so it seemed), but this morning the problem 
occurred, I verified and turned off the httpd proxy from external address, 
yet I cannot replicate the issue though I have not restarted the httpd 
service yet. So I am not sure what causes this issue or how to fix it 
permanently since it seems to resolve itself. We get the apache error every 
morning and I do not restart httpd and it seems to still work so I'm not 
sure it is related. 

The DefaultType in httpd.conf is set to: DefaultType text/plain. I had seen 
that as a potential problem in other posts but since ours is being served 
as application

The apache errors go like this:

[Mon Feb 18 04:30:08 2013] [error] ajp_read_header: ajp_ilink_receive 
failed
[Mon Feb 18 04:30:08 2013] [error] (120006)APR does not understand this 
error code: proxy: dialog to 192.168.1.216:8109 (192.168.1.216) failed
[Mon Feb 18 04:30:08 2013] [error] ajp_read_header: ajp_ilink_receive 
failed
[Mon Feb 18 04:30:08 2013] [error] (120006)APR does not understand this 
error code: proxy: dialog to 192.168.1.216:8109 (192.168.1.216) failed
[Mon Feb 18 04:30:09 2013] [error] (111)Connection refused: proxy: AJP: 
attempt to connect to 192.168.1.216:8109 (192.168.1.216) failed
[Mon Feb 18 04:30:09 2013] [error] ap_proxy_connect_backend disabling 
worker for (192.168.1.216)
[Mon Feb 18 04:30:09 2013] [error] proxy: AJP: failed to make connection to 
backend: 192.168.1.216
[Mon Feb 18 04:30:11 2013] [error] proxy: AJP: disabled connection for 
(192.168.1.216)
[Mon Feb 18 04:30:15 2013] [error] proxy: AJP: disabled connection for 
(192.168.1.216)
[Mon Feb 18 04:30:15 2013] [error] proxy: AJP: disabled connection for 
(192.168.1.216)
[Mon Feb 18 04:30:24 2013] [error] proxy: AJP: disabled connection for 
(192.168.1.216)
[Mon Feb 18 04:30:29 2013] [error] proxy: AJP: disabled connection for 
(192.168.1.216)
[Mon Feb 18 04:30:33 2013] [error] proxy: AJP: disabled connection for 
(192.168.1.216)
[Mon Feb 18 04:30:34 2013] [error] proxy: AJP: disabled connection for 
(192.168.1.216)
[Mon Feb 18 04:30:44 2013] [error] proxy: AJP: disabled connection for 
(192.168.1.216)
[Mon Feb 18 04:31:10 2013] [error] ajp_read_header: ajp_ilink_receive 
failed
[Mon Feb 18 04:31:10 2013] [error] (120006)APR does not understand this 
error code: proxy: dialog to 192.168.1.216:8109 (192.168.1.216) failed

The proxy setup looks like:

<Virtualhost *:80>
    ServerName www.somesite.com
    ServerAlias somesite.com
    ErrorLog /var/log/httpd/www.somesite.com-error.log
    CustomLog /var/log/httpd/www.somesite.com.log combined
    Options Indexes

    ProxyRequests Off
    ProxyPass / ajp://192.168.1.216:8109/
    ProxyTimeout 6000
</Virtualhost>

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